On Aug 12, 2020, at 12:50 PM, Paul Wouters <[email protected]> wrote:
> The "obvious" part only referred to "use DNS records to authenticate
> DNS authoritative servers".

That phrase over-simplified. A more accurate phrasing would be "use a chain of 
DNS records to authenticate DNS authoritative servers". There are many ways 
that the chain could break, or might not even exist. The web PKI is full of 
single-link trust anchors. There are many ways that trusting a single link 
could be dangerous as well.

Some of us don't find either of those as obvious as you do.

--Paul Hoffman

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